About the Company

Quinlan Development Group has been consistently successful by focusing on locations with strong growth potential, and opportunities where value is realized through creative and experienced hands-on management. This is accomplished by recognizing a property’s untapped potential while considering downside risks. This conservative approach, with strategically-timed acquisitions, has provided outsized investment returns for over four decades.


420 West 42nd Street

Quinlan Development Group’s philosophy of long-term ownership drives a commitment to quality and an attention to detail in all aspects of property development and its subsequent management. The partners personally oversee all phases of a project. This close level of involvement is integral to the company’s success. Combined with a deep understanding of each neighborhood, the result is a well-designed, site-appropriate building that maximizes value creation with budgetary discipline. Ongoing property operations show consistently low vacancy and high tenant retention, producing stable cash flow.

Quinlan Development Group prides itself on its reputation and flexibility, and on meeting its responsibilities to its investors. This is evidenced by numerous successful partnerships, many with not-for-profits and cultural organizations who have complex needs and for whom having an accountable and flexible partner is paramount. The partners always make substantial personal investments in projects and, in each instance, the company serves as the managing partner responsible for executing the strategic plan.


The Siena

The company feels a deep sense of responsibility to the New York City community, which is reflected by Robert Quinlan’s roots in the preservation world. There is a long history of successfully working in historic districts and restoring and preserving architecturally relevant buildings to their original elegance and design. Robert and Timothy Quinlan share a strong advocacy for sensible historic preservation that protects the integrity of neighborhoods, and they take seriously the responsibility of delivering architecturally significant buildings that will build upon the contextual character of their surroundings.


One Vandam

Quinlan Development Group also provides pro-bono consulting services to a diverse group of not-for-profits to help them realize the value of their real estate holdings in the context of their overall organizational goals.